Adobe Flash - LMZA Property Decoding Heap Corruption

EDB-ID:

40089


Platform:

Multiple

Published:

2016-07-11

Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=790

Loading the attached image causes heap corruption due to LMZA property decoding. To reproduce the issue, load the attach file '6' using LoadImage.swf as follows:

LoadImage.swf?img=6

The issue sometimes takes multiple refreshes to crash


Proof of Concept:
https://github.com/offensive-security/exploitdb-bin-sploits/raw/master/bin-sploits/40089.zip